CA2063390A1 - Feeding system for a lime reburning kiln - Google Patents

Feeding system for a lime reburning kiln

Info

Publication number
CA2063390A1
CA2063390A1 CA2063390A CA2063390A CA2063390A1 CA 2063390 A1 CA2063390 A1 CA 2063390A1 CA 2063390 A CA2063390 A CA 2063390A CA 2063390 A CA2063390 A CA 2063390A CA 2063390 A1 CA2063390 A1 CA 2063390A1
Authority
CA
Canada
Prior art keywords
lime
reburning kiln
lime mud
mud
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2063390A
Other languages
French (fr)
Other versions
CA2063390C (en
Inventor
Arto Ahvenainen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Andritz Oy
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2063390A1 publication Critical patent/CA2063390A1/en
Application granted granted Critical
Publication of CA2063390C publication Critical patent/CA2063390C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2/00—Lime, magnesia or dolomite
    • C04B2/10—Preheating, burning calcining or cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/32—Arrangement of devices for charging
    • F27B7/3205—Charging
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/14—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge
    • F27B7/16—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means
    • F27B7/161—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall
    • F27B7/162—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall the projections consisting of separate lifting elements, e.g. lifting shovels
    • F27B2007/163—Rotary-drum furnaces, i.e. horizontal or slightly inclined with means for agitating or moving the charge the means being fixed relatively to the drum, e.g. composite means the means comprising projections jutting out from the wall the projections consisting of separate lifting elements, e.g. lifting shovels using only a ring of lifting elements to lift the charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B2007/2008—Devices for reintroducing dust in the drum

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Treatment Of Sludge (AREA)
  • Drying Of Solid Materials (AREA)
  • Processing Of Solid Wastes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Weting (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Bipolar Transistors (AREA)
  • Furnace Details (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

A method and apparatus for heat treatment of lime mud comprises drying of the lime mud to be introduced into the lime reburning kiln (5) in a pneumatic dryer (3) by means of flue gases discharged from the lime reburning kiln in order to regenerate the lime content of the lime mud. From a drying filter (6), the lime mud thickened to a dry solids content of over 75 %, preferably to 80 %, is introduced into a feed chamber (2) through which an adjustable portion of the flue gas is conducted. Depending on the gas amount, 100 % or less of the lime mud is entrained with the gas into the dryer (3), the remaining portion falling into the lower section (14) of the feed chamber, wherefrom it is further transferred into the lime reburning kiln (5).
CA002063390A 1989-07-03 1990-06-28 Feeding system for a lime reburning kiln Expired - Lifetime CA2063390C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI893224 1989-07-03
FI893224A FI87245C (en) 1989-07-03 1989-07-03 INMATNINGSSYSTEM FOER MESAUGN

Publications (2)

Publication Number Publication Date
CA2063390A1 true CA2063390A1 (en) 1991-01-04
CA2063390C CA2063390C (en) 1995-08-08

Family

ID=8528703

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002063390A Expired - Lifetime CA2063390C (en) 1989-07-03 1990-06-28 Feeding system for a lime reburning kiln

Country Status (9)

Country Link
EP (1) EP0480960B1 (en)
JP (1) JP2553771B2 (en)
AT (1) ATE119140T1 (en)
CA (1) CA2063390C (en)
DE (1) DE69017449T2 (en)
ES (1) ES2071100T3 (en)
FI (1) FI87245C (en)
PT (1) PT94572B (en)
WO (1) WO1991000251A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090047613A1 (en) * 2005-03-29 2009-02-19 Kadant Black Clawson Inc. Method and Apparatus for Pneumatic Drying of Lime Mud
CN104829146B (en) * 2015-03-26 2017-03-01 中国中轻国际工程有限公司 A kind of white mud lime kiln feeding method and its drawing-in device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE184846C1 (en) * 1963-01-01
US2796249A (en) * 1955-04-05 1957-06-18 Western Precipitation Corp Apparatus for heating finely divided solid material
FR1238562A (en) * 1958-10-14 1960-08-12 Furnace with rotating combustion chamber
US3603569A (en) * 1969-12-29 1971-09-07 Kaiser Aluminum & Chemical Kiln preheat and drying section
GB1451057A (en) * 1973-11-29 1976-09-29 Ass Portland Cement Atomised kiln feed
FR2483447A1 (en) * 1980-06-03 1981-12-04 Ugine Kuhlmann COMPOSITION AND METHOD FOR PROTECTING MATERIALS AGAINST SOIL
DE3425099A1 (en) * 1984-07-07 1986-02-06 Klöckner-Humboldt-Deutz AG, 5000 Köln Installation for the treatment of finely grained material, especially cement raw meal
SE460728B (en) * 1988-11-17 1989-11-13 Smidth & Co As F L PROCEDURE AND EQUIPMENT IN TREATMENT OF MESA

Also Published As

Publication number Publication date
EP0480960B1 (en) 1995-03-01
FI893224A (en) 1991-01-04
EP0480960A1 (en) 1992-04-22
ES2071100T3 (en) 1995-06-16
DE69017449T2 (en) 1995-08-10
PT94572B (en) 1997-05-28
DE69017449D1 (en) 1995-04-06
WO1991000251A1 (en) 1991-01-10
JPH04504163A (en) 1992-07-23
PT94572A (en) 1992-06-30
FI87245B (en) 1992-08-31
ATE119140T1 (en) 1995-03-15
JP2553771B2 (en) 1996-11-13
FI893224A0 (en) 1989-07-03
CA2063390C (en) 1995-08-08
FI87245C (en) 1992-12-10

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry